HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Shober, A. L. Articles by Sims, J. T. Search for Related Content PubMed Articles by Shober, A. L. Articles by Sims, J. T. Agricola Articles by Shober, A. L. Articles by Sims, J. T. Related Collections Phosphorus Nutrient Management

Integrating Phosphorus Source and Soil Properties into Risk Assessments for Phosphorus Loss

^a Dep. of Soil and Water Science, Univ. of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
^b Dep. of Plant and Soil Sciences Univ. of Delaware Newark, DE 19716

View larger version (19K): [in this window] [in a new window]   Fig. 1. Relationship between organic P source (a) water-soluble P (WSP) and total P and (b) WSP and total Al + Ca + Fe; SM = liquid swine manure.

View larger version (38K): [in this window] [in a new window]   Fig. 2. Effect of incorporation of organic P sources and KH2PO4 at 135 kg P ha–1 on soil water-soluble P in a wide range of Mid-Atlantic soils at the 2-d sampling date. Values within the same soil with the same letter are not significantly different at P < 0.05 using Tukey's Studentized range test. M3-PSR = Mehlich-3 phosphorus saturation ratio; APL = alum-treated poultry litter; B1 = biological P removal + lime biosolids; B2 = lime + Al biosolids; B3 = lime + Fe biosolids; B4 = Fe-treated biosolids (Hampton Roads); B5 = Fe-treated biosolids (Back River); B6 = anaerobically digested biosolids; DM = liquid slurry pit dairy manure; F = fertilizer (KH2PO4); NPL = normal poultry litter; SM = liquid swine manure; U = unamended soil.

View larger version (23K): [in this window] [in a new window]   Fig. 3. Comparison of soil water-soluble phosphorus (WSP) concentrations after incubation of organic P sources and Mid-Atlantic soils for 2 d with soil WSP concentrations after incubation for (a) 30 d and (b) 180 d. APL = alum-treated poultry litter; B1 = biological P removal + lime biosolids; B2 = lime + Al biosolids; B3 = lime + Fe biosolids; B4 = Fe-treated biosolids (Hampton Roads); B5 = Fe-treated biosolids (Back River); B6 = anaerobically digested biosolids; DM = liquid slurry pit dairy manure; F = fertilizer (KH2PO4); NPL = normal poultry litter; SM = liquid swine manure; U = unamended soil.

View larger version (18K): [in this window] [in a new window]   Fig. 4. Relationship between initial soil Mehlich-3 phosphorus saturation ratio (M3-PSR) of the eight Mid-Atlantic incubation soils and soil water-soluble phosphorus (WSP) after incubation for (a) 2 d and (b) 180 d following the incorporation of KH2PO4 (F), liquid swine manure (SM), and Fe-treated biosolids (B5) at 135 kg total P ha–1.

View larger version (18K): [in this window] [in a new window]   Fig. 5.   Prediction of soil water-soluble phosphorus (WSP) after incorporation of organic P sources and KH2PO4 into eight Mid-Atlantic soils using a Mehlich-3 phosphorus saturation ratio (M3-PSR)–phosphorus source coefficient (PSC) rating system.